I started at bmi regional and I loved it. None if us newbies spoke about moving on, we were all happy to be there. The 135/145 is a great aircraft, we flew a lot of sectors in busy airspace and it was a wonderful experience. A big shiny jet is not the be all of aviation. In the beginning I suggest you accept any job and gain experience, then later on when your priorities have changed a little, say with a family for example, you can choose an operator that fits with your home life. But right now with nil experience you would be silly to dismiss any offer. Good luck.